Hi,
Huh, thanks for the feedback ! I don't really recall having read Ralf's proposal at all and I apologize for that. I'm sort of unable to build packages locally at the mo but I'll try and take a look later. Thanks anyway.

Assumed somebody temporarily wants to build jack2 from git, but switch back to jack2 from the official repository, as soon as 1.9.11 is released, you could replace the original PKGBUILD by this one [1].